arch/x86/kernel/audit_64.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 #include <linux/init.h>
   3 #include <linux/types.h>
   4 #include <linux/audit.h>
   5 #include <asm/unistd.h>
   6
   7 static unsigned dir_class[] = {
   8 #include <asm-generic/audit_dir_write.h>
   9 ~0U
  10 };
  11
  12 static unsigned read_class[] = {
  13 #include <asm-generic/audit_read.h>
  14 ~0U
  15 };
  16
  17 static unsigned write_class[] = {
  18 #include <asm-generic/audit_write.h>
  19 ~0U
  20 };
  21
  22 static unsigned chattr_class[] = {
  23 #include <asm-generic/audit_change_attr.h>
  24 ~0U
  25 };
  26
  27 static unsigned signal_class[] = {
  28 #include <asm-generic/audit_signal.h>
  29 ~0U
  30 };
  31
  32 int audit_classify_arch(int arch)
  33 {
  34 #ifdef CONFIG_IA32_EMULATION
  35         if (arch == AUDIT_ARCH_I386)
  36                 return 1;
  37 #endif
  38         return 0;
  39 }
  40
  41 int audit_classify_syscall(int abi, unsigned syscall)
  42 {
  43 #ifdef CONFIG_IA32_EMULATION
  44         extern int ia32_classify_syscall(unsigned);
  45         if (abi == AUDIT_ARCH_I386)
  46                 return ia32_classify_syscall(syscall);
  47 #endif
  48         switch(syscall) {
  49         case __NR_open:
  50                 return 2;
  51         case __NR_openat:
  52                 return 3;
  53         case __NR_execve:
  54         case __NR_execveat:
  55                 return 5;
  56         default:
  57                 return 0;
  58         }
  59 }
  60
  61 static int __init audit_classes_init(void)
  62 {
  63 #ifdef CONFIG_IA32_EMULATION
  64         extern __u32 ia32_dir_class[];
  65         extern __u32 ia32_write_class[];
  66         extern __u32 ia32_read_class[];
  67         extern __u32 ia32_chattr_class[];
  68         extern __u32 ia32_signal_class[];
  69         audit_register_class(AUDIT_CLASS_WRITE_32, ia32_write_class);
  70         audit_register_class(AUDIT_CLASS_READ_32, ia32_read_class);
  71         audit_register_class(AUDIT_CLASS_DIR_WRITE_32, ia32_dir_class);
  72         audit_register_class(AUDIT_CLASS_CHATTR_32, ia32_chattr_class);
  73         audit_register_class(AUDIT_CLASS_SIGNAL_32, ia32_signal_class);
  74 #endif
  75         audit_register_class(AUDIT_CLASS_WRITE, write_class);
  76         audit_register_class(AUDIT_CLASS_READ, read_class);
  77         audit_register_class(AUDIT_CLASS_DIR_WRITE, dir_class);
  78         audit_register_class(AUDIT_CLASS_CHATTR, chattr_class);
  79         audit_register_class(AUDIT_CLASS_SIGNAL, signal_class);
  80         return 0;
  81 }
  82
  83 __initcall(audit_classes_init);